Ncuti Gatwa is doubling up and playing two versions of himself in Joy to the World.

Its the First Law of Time: dont cross your own timestream.

Get ready for the rule to be broken again in this years Christmas special Joy to the World.

Ncuti Gatwa as the Doctor and Nicola Coughlan as Joy wearing red and green outfits with floating objects and glitter

One asks the other How do I get to be you?

and Where do I go, what do I do?

and is told both times Well find out.

But a deadly plan is unfolding across the Earth, just in time for Christmas.